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LinkedIn· System & Infrastructure Engineer

LinkedIn SDE Interview Experience | Bangalore

Location
Bangalore
Experience
2.5 years
Posted
26 Feb 2026
341 reads

Summary

I interviewed for a System & Infrastructure Engineer role at LinkedIn in Bangalore, going through several technical and system design rounds, and ultimately received a rejection.

How it went

LinkedIn | System & Infrastructure Engineer

Background
• Current employer: Oracle
• Total experience: 2.5 years

-------------------------------------------------
Screening (R0)
• Coding: Nested List Weight Sum II
• Core Java concepts
• SQL / NoSQL, OS basics, caching
• Quick résumé walkthrough

-------------------------------------------------
Technical Round 1 (R1 – DSA)
1. Find the Celebrity
2. N-ary Tree – detect cyclic dependencies

-------------------------------------------------
Technical Round 2 (R2 – DSA)
1. Variant of Word Ladder
2. Max Points on a Line

-------------------------------------------------
System Design (R3)
Design a metrics platform:
• Services publish metrics
• Store, aggregate, and display on a dashboard
• Implement alerting thresholds

-------------------------------------------------
Hiring Manager (R4)
• Deep dive into current projects and architecture
• Two positives and two negatives about your manager
• Why do you want to leave Oracle? Why LinkedIn?


Status: Rejected

Questions asked (6)

  1. 01

    Nested List Weight Sum II

    Data Structures & Algorithms

    I was asked a coding problem titled Nested List Weight Sum II.

    Open the problem
  2. 02

    Find the Celebrity

    Data Structures & Algorithms

    I encountered the problem Find the Celebrity.

    Open the problem
  3. 03

    N-ary Tree: Detect Cyclic Dependencies

    Data Structures & Algorithms

    I was given a problem involving an N-ary Tree to detect cyclic dependencies.

  4. 04

    Word Ladder Variant

    Data Structures & Algorithms

    I was presented with a variant of the Word Ladder problem.

    Open the problem
  5. 05

    Max Points on a Line

    Data Structures & Algorithms

    I had a coding problem on Max Points on a Line.

    Open the problem
  6. 06

    Design a Metrics Platform

    System Design

    I was tasked with designing a metrics platform. Key requirements included services publishing metrics, storing, aggregating, and displaying them on a dashboard, and implementing alerting thresholds.

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